Granted Patent
Utility
US 6,047,451 · App. 09/315,319
Belt shortening device
Inventors:
Russell Berger, Stephen Berger
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: May 20, 1999
Inventors
Russell Berger
Stephen Berger
Assignee (at issue)
Constance F. Berger
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.